>1f4x_L mol:protein length:210 ANTIBODY S-20-4, FAB FRAGMENT, LIGHT CHAINQAVVTQESALTTSPGETVTLTCRSSTGTVTTSNYANWVQEKPDHLFTGLIGATNNRAAGVPVRFSGSLIGGKAALTITGAQTEDEAIYFCALWYSGHWVFGGGTKLTVLGQPKSSPSVTLFPPSSEELETNKATLVCTITDFYPGVVTVDWKVDGTPVTQGMETTNPSKQSNNKYMASSYLTLTARAWERHSSYSCQVTHEGHTVEKSLS